Electron tube mounting



Aug. 3, 1943. e. BAUM-BACH ELECTRON TUBE MOUNTING Filed Oct. 30, 1941 INVENTOR. GEORG BHUMBHCH H T TORNE Y Patented Aug. 3, 1943 j ELECTRON TUBE MOUNTING Georg Baumbach, Berlin, Germany; vested in the Alien Property Custodian Application October 30, 1941,. Serial N0. 417,08 8

' In GermanyJuly 2, 1940'" 3 Claims. (01.173-344) The present invention is a continuation inpart .of that described in my prior application Serial No. 389,293, filed April 19, 1941, issued as Patent 2,297,449 on Sept. 29,1942, which shows a novel construction and arrangement of the'contact springsforming part of the sockets for electron tubes.

According to again bent so as to form an approximately V J-shaped contact member. .The short limbs are seated in bores or slots of a' bottom part of the The long shanks extend through the socket. bottom part and serve as soldering tabs. The contact springs so carried by the bottom part are held in position by a capwhich also serves to cover them.-

According to the invention described hereafter a construction ofthis kind is employed as an intermediate socket, that is,- a contact device intervening between the respective electron tube and a second or outer socket. socket so constructed may be made to be small in height, because the long'limbs of the spring wires may be directly joined to contact studs with which the intermediate socket-isfitted in order to engage contact springs of the second socket. In the drawing, Fig. l is a sectional view show- An intermediate the prior invention, the contact springs consist of a springy wire bent atits Inid- .point to form a hairpin-shaped loop which is ing an example of the intermediate socket, one

form of a second socket and the base ofQan electron tube, Fig. 2 is a plan view of theintermedi- .ate socket, Fig. 3. represents a fragmentary section on line 3-3 of Fig. 1, and 4' shows a spring in perspective. p

The intermediate socket comprises a bottom part or base member I and an upper part or cap e. The contactsprings 2 are carried bypart I and are clamped fast and covered by the cap 3,

the parts 1,.3 being firmly held together by'tubu lar rivets 8 or by screws or other fastening means.

The springs 2 consist of a springy wire bent to form a loop having two shanks which are parallel to one another and are in the, shape of a J. The short limbs are seated in bores or slots 53 of part I. The long limbs extend through openings it of part i. 4 denotes the base'of an electron tube. The electron tube is inserted with base l over cap 3 and has contactistuds 5 which. 1 are each to engage with the two shanks of one of the springs 2. ,Part I has recesses l for the freeend of the studs 5, while cap 3 is provided with-bores H for these studs.

The contact studs '5 may: have anxannular groove A in order-to provide for an accurate position'of the studs 5 with respect to the springs 2.

The cap. '3 may have notches 6 or ribsforengagement with ribsor notches, respectivel or] the. part 4 in order to guide respect to each other. r g.

Part lis so constructed that-it may be inserted in a socket ,B to' engage with contact means the parts 3, 4 with thereof. To such end, part i has contact studs r M for engagementwith contact springs near the socket B. The studs: M: are joinedtoithe springs Zby connectors IT, 'A central projection of part i carries a spring IE, or several such springs, arrahgedto engage with the bottom of socket B andto holdthe intermediate socket and "socket B together;

What is claimed is r 1. Asocket adapter for'electron tubes and the like comprising .a .pair of insulating members,

one of said members 'beinga base member and the other a cap member therefor, said base member being formed with an upwardly projecting mid-sectionhaving a substantially flat upper sur- 7 face, said cap memberhaving' a recess" formed T in the underside thereof adapted to receive the ward the center of said mid-section, each chan nel terminating in a relatively deep recess,..channels formed in the under surface of said cap member in registerl -with the first mentioned channels, there being one of said radial channels foreach prong-of an electron tube, aplurality g of, contactmembers, one for each of said channels, each of said contact members being formed from a single wire bent at its mid section-to forn rtwo parallel spring members of approximate-1y hairpin-shape, said parallel members being ,further bent into substantially J-shape}, adapted to besecured in said channels with the shorter. arms of the contact members each depending intoa' recess at'the end of the respective channels, other substantially vertical channels formed between said base andcapmembers to receive the. longer arms of the contact members, contact prongs adapted to fit an electronics tube socket securedin the under'surface. of said.

7 base member, connections between the respective contact prongs and corresponding'ones of said contact members, a plurality of openings in said cap members communicating 'with said. channels for receiving the terminals of an electronic tube and a cavity formed in said cap and base members in the areas adjacent each of said holes to make room to permit the parallel wire sections of the respective contact members to spread apart when engaged by tube terminals in- Y serted in said holes thereby permitting the tube 2,825,825 a j J g; f

2. An adapter according to claim 1, in which the cap and base members arefastened to each 7 other by means disposed in an area adjacent their outer edges.

3. The combination according to claim 1, in which said base member is provided with downwardly projecting resilient holding means adapted to engage an pening in ,asocketto releasably holdltheladapter in place. r

J a GEORG BAUMBACI-I. 

